WO2004063672A1 - Dispositif pour determiner une position - Google Patents

Dispositif pour determiner une position Download PDF

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Publication number
WO2004063672A1
WO2004063672A1 PCT/IB2003/006269 IB0306269W WO2004063672A1 WO 2004063672 A1 WO2004063672 A1 WO 2004063672A1 IB 0306269 W IB0306269 W IB 0306269W WO 2004063672 A1 WO2004063672 A1 WO 2004063672A1
Authority
WO
WIPO (PCT)
Prior art keywords
arrangement
magnetic
shaped contour
bar
magnet
Prior art date
Application number
PCT/IB2003/006269
Other languages
English (en)
Inventor
Stefan Butzmann
Original Assignee
Philips Intellectual Property & Standards Gmbh
Koninklijke Philips Electronics N.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Intellectual Property & Standards Gmbh, Koninklijke Philips Electronics N.V. filed Critical Philips Intellectual Property & Standards Gmbh
Priority to JP2004566203A priority Critical patent/JP2006513415A/ja
Priority to US10/541,415 priority patent/US7242181B2/en
Priority to AU2003288653A priority patent/AU2003288653A1/en
Priority to EP03780496A priority patent/EP1583938A1/fr
Publication of WO2004063672A1 publication Critical patent/WO2004063672A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G01D5/145—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields

Definitions

  • the invention relates to an arrangement for determining the position of a magnetic-field-sensitive sensor unit in the magnetic field of a magnet arrangement having an at least substantially bar-shaped contour.
  • AMR sensors anisotropic magnetoresistive
  • the magnetic field lines of the magnetic field generated by the bar magnet in this case run, as shown in Fig. 1, from the magnetic north pole which points upward in the figure to the magnetic south pole which points downward in the figure.
  • the magnetoresistive sensor is arranged in a plane generated by Cartesian coordinates x and y, in which plane the schematically illustrated field line also runs and likewise the bar magnet is arranged with its longitudinal center axis. If the position of the bar magnet with respect to the magnetoresistive sensor changes, both the field strength in the y direction extending perpendicular to the longitudinal center axis of the bar magnet and the field strength in the x direction extending parallel to the longitudinal center axis of the bar magnet change at the location of the magnetoresistive sensor. Both field components have an influence on a bridge output signal that is output by the Wheatstone bridge circuit of the sensor. The bridge output signal is proportional to the field strength in the y direction, but the sensitivity of the sensor decreases as the field strength in the x direction increases.
  • the field strength in the x direction has a constant sign for all positions of the bar magnet with respect to the magnetoresistive sensor that are to be measured. This is important so as to avoid what is known as flipping, that is to say an inversion of the sensor transfer characteristic. If the sensor is located at the upper end of the magnet, that is to say is pushed along the motion coordinate toward its north pole, then a negative value is measured for the magnetic field strength of the magnetic field in the y direction that is generated by the bar magnet.
  • the sensor is located at the lower end of the magnet, that is to say is pushed along the motion coordinate toward its south pole, then a positive value is measured for the magnetic field strength of the magnetic field in the y direction that is generated by the bar magnet.
  • Fig. 2 shows, by way of example, a variation over time of this bridge output signal at a supply voltage of 5 N for a change in position of the sensor with respect to the bar magnet along the motion coordinate between the north pole and the south pole of the bar magnet of at most ⁇ 5 mm for a bar magnet having a length of 10 mm.
  • the bridge output signal is given as a voltage in millivolts having the designation "U out /mV" and the change in position of the sensor with respect to the bar magnet along the motion coordinate is given as a value of the Cartesian coordinate x, calculated from the center between the north pole and the south pole of the bar magnet, having the designation "x/mm”.
  • Fig. 1 The range along the motion coordinate between the north pole and the south pole of the bar magnet that can be used in this arrangement for position measurement is shown in Fig. 1 by the designation "displacement range". It can be seen that this range along the motion coordinate that can be used for position measurement makes use of the dimension of the bar magnet between its north pole and its south pole only to an insufficient extent. Using the arrangement shown in Fig. 1, it is therefore necessary to select the length of the magnet, that is to say the dimension of the bar magnet along the motion coordinate, to be considerably greater than the range that can be used for position measurement. In the example shown in Figs. 1 and 2, a bar magnet is required which is approximately 1.5 times longer that the range that can be used for position measurement. This is disadvantageous on account of the increased space requirement of the arrangement and also the material requirement for the bar magnet.
  • this object is achieved by an arrangement for determining the position of a magnetic-field-sensitive sensor unit in the magnetic field of a magnet arrangement having an at least substantially bar-shaped contour along an at least substantially rectilinear motion coordinate that extends parallel to a longitudinal axis of the at least substantially bar-shaped contour, in which the magnetic-field-sensitive sensor unit is intended to measure a component of the magnetic field which extends in a plane that is at least substantially parallel to the longitudinal axis of the at least substantially bar-shaped contour in a manner at least substantially perpendicular to this longitudinal axis, and the magnet arrangement has a magnetic north pole in the region of a first end of the at least substantially bar-shaped contour, a magnetic south pole in the region of a second end of the at least substantially bar-shaped contour, and a narrowing of the at least substantially bar- shaped contour in the central region extending between the north pole and the south pole.
  • the invention is based on the knowledge that a shortening of the magnet arrangement can be achieved if it is possible to generate significant field strengths in the direction of the longitudinal axis of the magnet arrangement, that is to say in the direction of the motion coordinate or in the x direction, even at the ends of the magnet arrangement in the region of the magnetic north and south poles.
  • the invention achieves this result, using the described knowledge, in an advantageous manner by the measures according to the invention.
  • the exit angle of the field lines at the ends of the magnet arrangement in the region of the magnetic north and south poles is changed, so that greater magnetic field strengths are generated in the x direction.
  • a shortening of the magnet arrangement can be achieved without changing the extent of the range that can be used for position measurement.
  • the narrowing of the at least substantially bar-shaped contour corresponds at least in sections to a shape that at least substantially follows the profile of an ellipse.
  • the narrowing of the at least substantially bar-shaped contour corresponds at least in sections to a shape that at least substantially follows the profile of a cycloid.
  • the magnetic-field-sensitive sensor unit is designed with a Wheatstone bridge of magnetoresistive elements, the longitudinal direction of which extends at least substantially along the motion coordinate.
  • a sensor unit is given in a simple and cost-effective manner by the abovementioned magnetoresistive sensor of the type KMZ 10 B, as sold by the company Philips Semiconductors.
  • the magnet arrangement is connected to this first body and the sensor unit is connected to the second body, in order to determine the position of the first body with respect to the second body along the motion coordinate,
  • the sensor unit is connected to the body which is arranged fixedly with respect also to an evaluation and control arrangement that is to be connected to the sensor unit, and the magnet arrangement is connected to the body which is designed to move with respect to said first body.
  • the first and second bodies are formed by parts of a motor vehicle.
  • the first and second bodies are formed by parts of the internal combustion engine of a motor vehicle.
  • the second body comprises part of a valve mechanism for the internal combustion engine of a motor vehicle, and the first body is designed with a part of the valve mechanism that can move with respect thereto.
  • the invention can be used as an advantageous configuration for an electromagnetic valve mechanism for the internal combustion engine of a motor vehicle, in which the position of an armature, comiected to a valve disk, in an electromagnetic actuator that operates the valve is to be measured for the purpose of regulating the speed of placing the valve disk onto the valve seat. It should be taken into account that typical valve lifts in internal combustion engines of motor vehicles move between 8 and 12 mm, and in exceptional cases even greater valve lifts may occur. For this reason, an arrangement is required that can detect a rectilinear movement over such a range.
  • the arrangement according to the invention is preferably suited to this purpose not only on account of its compact design and its robustness but also because it deals with the generation of a sensor output signal with the necessary processing speed.
  • the arrangement according to the invention with an "AMR" sensor has sufficiently rapid signal processing. Moreover, the arrangement according to the invention is able to supply precise information about the measured position, the so-called “absolute position" of the actuator, in any operating situation and thus even immediately upon startup.
  • FIG. 1 shows an arrangement according to the prior art for linear position measurement using a magnetoresistive sensor of the type KMZ 10 B having a so-called standard bridge.
  • Fig. 2 shows, by way of example, the variation over time of the bridge output signal of the magnetoresistive sensor of the type KMZ 10 B in the arrangement of Fig. 1.
  • Fig. 3 shows an example of embodiment of an arrangement according to the invention for linear position measurement using a magnetoresistive sensor of the type KMZ 10 B having a so-called standard bridge.
  • Fig. 4 shows, by way of example, the variation over time of the bridge output signal of the magnetoresistive sensor of the type KMZ 10 B in the arrangement of Fig. 3.
  • Fig. 5 shows a schematic illustration of a valve mechanism for the internal combustion engine of a motor vehicle, as an example of embodiment of one use of the invention.
  • FIG. 3 an arrangement for linear position measurement using a magnetoresistive sensor of the type KMZ 10 B is again shown, as is known from the abovementioned data sheet "General - Magnetic field sensors" of 9 January 1997, page 4.
  • the arrangement of Fig. 3 shows the use of this magnetoresistive sensor having a magnet arrangement that is in this case again designed as a bar magnet.
  • the magnetic field lines of the magnetic field generated by the bar magnet in this case run, as shown in Fig. 3, from the magnetic north pole which points upward in the figure to the magnetic south pole which points downward in the figure.
  • the magnetoresistive sensor is arranged in a plane generated by Cartesian coordinates x and y, in which plane the schematically illustrated field line also runs and likewise the bar magnet is arranged with its longitudinal center axis. If the position of the bar magnet with respect to the magnetoresistive sensor changes, both the field strength in the y direction extending perpendicular to the longitudinal center axis of the bar magnet and the field strength in the x direction extending parallel to the longitudinal center axis of the bar magnet change at the location of the magnetoresistive sensor. Both field components have an influence on the bridge output signal that is output by the Wheatstone bridge circuit of the sensor.
  • the bridge output signal is again proportional to the field strength in the y direction, but the sensitivity of the sensor decreases as the field strength in the x direction increases.
  • the field strength in the x direction has a constant sign for all positions of the bar magnet with respect to the magnetoresistive sensor that are to be measured. This is important so as to avoid what is known as flipping, that is to say an inversion of the sensor transfer characteristic. If the sensor is located at the upper end of the magnet, that is to say is pushed along the motion coordinate toward its north pole, then a negative value is measured for the magnetic field strength of the magnetic field in the y direction that is generated by the bar magnet.
  • the sensor is located at the lower end of the magnet, that is to say is pushed along the motion coordinate toward its south pole, then a positive value is measured for the magnetic field strength of the magnetic field in the y direction that is generated by the bar magnet.
  • the bar magnet used in the arrangement shown in Fig. 3 has a narrowing in the central region between its magnetic north pole at the first end of the at least substantially bar-shaped contour and its magnetic south pole at the second end of its at least substantially bar-shaped contour. This makes it possible for significant field strengths to be generated in the direction of the longitudinal axis of the bar magnet, that is to say in the direction of the motion coordinate or in the x direction, even at the ends of the magnet arrangement in the region of the magnetic north and south poles.
  • the exit angle of the field lines at the ends of the bar magnet in the region of the magnetic north and south poles is changed, so that greater magnetic field strengths are generated in the x direction.
  • a shortening of the bar magnet can be achieved without changing the extent of the range that can be used for position measurement.
  • Fig. 4 shows, by way of example, a variation over time of this bridge output signal at a supply voltage of 5 N for a change in position of the sensor with respect to the bar magnet along the motion coordinate between the north pole and the south pole of the bar magnet of at most ⁇ 5 mm for a bar magnet having a length of 11 mm.
  • the bridge output signal is again given as a voltage in millivolts having the designation "U 0Ut / V" and the change in position of the sensor with respect to the bar magnet along the motion coordinate is given as a value of the Cartesian coordinate x, calculated from the center between the north pole and the south pole of the bar magnet, having the designation "x/mm".
  • the diagram of Fig 4 shows a variation over time of the bridge output signal, which now, within the entire range of this change in position of the sensor with respect to the bar magnet along the motion coordinate of in this case ⁇ 5 mm, behaves linearly proportionally to this change in position of the sensor with respect to the bar magnet, so that even at the ends of the range of this change in position shown overall, in this case of at most ⁇ 5 mm, the bridge output signal retains a linear profile despite greatly decreasing values for the magnetic field strength in the x direction. There, the bridge output signal can thus likewise still be used for the desired position measurement.
  • the range along the motion coordinate between the north pole and the south pole of the bar magnet that can be used in this arrangement for position measurement is again shown in Fig. 4 by the designation
  • Fig. 5 shows, in longitudinal section along its valve shaft 1, a schematic illustration of a valve mechanism for the internal combustion engine of a motor vehicle as an example of embodiment of one use of the invention.
  • This valve mechanism comprises an actuator consisting of two annular electromagnets 2, 3, which each comprise a pot-shaped iron core 4 and 5, respectively, and an annular winding 6 and 7, respectively.
  • the valve shaft 1 is led through in each case one cylindrical opening 10 or 11 in each case in a central pole 8 or 9 of the pot-shaped iron cores 4 and 5.
  • the annular electromagnets 2, 3 are at a fixed spacing from one another and are arranged as a mirror image of one another.
  • a disk-shaped armature 21 of magnetizable steel is arranged between them.
  • This armature 21 is fixedly connected to the valve shaft 1 and is moved with the latter and with a valve disk 12 connected to the latter with respect to the annular electromagnets 2, 3 along a longitudinal axis 13 of the valve shaft 1 which at the same time forms a motion coordinate of the valve shaft 1.
  • the valve disk 12 is alternately lifted off a valve seat 14 and pressed against the same.
  • Part of the cylindrical head having a first guide 15 for the valve shaft 1 on the valve disk side and an inlet and outlet channel 16 for fuel mixture or exhaust gas and also a fixing 17 for the annular electromagnets 2, 3 is shown in Fig. 5.
  • a threaded bore 18 is furthermore arranged in the fixing 17 in a manner concentric to the valve shaft 1, in which threaded bore 18 there is an adjusting screw 19 which is shaped with a second guide 20 for the valve shaft 1.
  • a first and a second spring plate 22, 23 are arranged fixedly on the valve shaft 1 in a manner coaxial to the longitudinal axis 13, on which spring plates a first and a second compression spring 24 and 25 are respectively supported by in each case one end.
  • the first compression spring 24 is supported by its other end on the cylindrical block, namely, in the example of embodiment shown, on the first guide 15 for the valve shaft 1 on the valve disk side.
  • the second compression spring 25 is supported by its other end on the adjusting screw 19, namely, in the example of embodiment shown, on the second guide 20 for the valve shaft 1. hi this way, the first compression spring 24 acts to close the valve, that is to say to press the valve disk 12 against the valve seat 14. If there were no actuator, then the first compression spring 24 would ensure that the valve is tightly closed.
  • the second compression spring 25 acts to open the valve, that is to say to lift the valve disk 12 off the valve seat 14. If there were no actuator, then the second compression spring 25 would ensure that the valve is opened. Both springs operate "against one another". By means of this design, inter alia the armature 21 is held in a central position which can be adjusted by adjusting the adjusting screw 19 in the threaded bore 18.
  • the armature 21 If current passes through the first electromagnet 2, which is the upper electromagnet in Fig. 5, then the armature 21 is drawn upward and the valve is closed. Accordingly, the armature 21 moves downward and opens the valve if current passes through the second electromagnet 3, which is the lower electromagnetic in Fig. 5. If there is no current passing through either of the electromagnets 2, 3 then the armature 21 is kept in the aforementioned central position by the springs and the valve is half-open.
  • the armature 21, by virtue of the spring resistances, then swings back until it reaches its lower position, ideally until it has almost reached it but not quite on account of the frictional forces in the mechanical construction, this lower position, the armature 21 bears tightly against the second electromagnet 3, with the second, upper spring 25 being relaxed and the first, lower spring 24 being compressed, and as a result the valve being opened.
  • the lower, second electromagnet 3 need in this case only have current flow weakly through it in order to draw the armature 21 fully into its lower position.
  • an arrangement comprising a bar magnet 28 accommodated in a non- magnetic housing 27 is attached at the end 26 of the valve shaft 1 that faces away from the valve disk 12.
  • this attachment is effected by a thread on the end 26 of the valve shaft 1 that faces away from the valve disk 12 and on the housing 27.
  • the bar magnet 28 is aligned with its longitudinal axis between north and south pole coaxial to the longitudinal axis 13 of the valve shaft.
  • the north pole faces away from the valve disk 12 and the south pole faces toward the valve disk 12.
  • the longitudinal axis 13 of the valve shaft 1 therefore also forms the motion coordinate of the bar magnet 28.
  • a magnetoresistive sensor 31 is located on a sensor fixing 29 which, in the example of embodiment shown in Fig. 5, is mounted on a covering plate 30 seated on the fixing 17 for the annular electromagnets 2, 3.
  • This magnetoresistive sensor 31 is preferably again of the KMZ 10 B type.
  • the sensor fixing 29 is equipped with a mounting surface, on which the sensor 31 is fitted in a planar manner.
  • the magnetoresistive elements of the sensor 31 are aligned in a plane that is coincident with the plane of the drawing in Fig. 5 and in which the motion coordinate of the bar magnet 28 is also located; in their longitudinal direction, the magnetoresistive elements of the sensor 31 are aligned in the direction of the motion coordinate of the bar magnet 28.
  • the sensor 31 measures the field component of the magnetic field generated by the bar magnet 28 which lies perpendicular to the motion coordinate in the plane of the drawing. I-n Fig. 5, the range along the motion coordinate between the north pole and the south pole of the bar magnet 28 that can be used in this arrangement for position measurement is shown by the arrows 32.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

L'invention concerne un dispositif permettant de déterminer la position d'une unité de détection sensible au champ magnétique dans le champ magnétique d'un système d'aimant, qui présente au moins sensiblement un profil en forme de barre, le long d'une coordonnée de déplacement au moins sensiblement rectiligne qui s'étend parallèlement à un axe longitudinal dudit profil. L'unité de détection sensible au champ magnétique sert à mesurer une composante du champ magnétique qui s'étend dans un plan au moins sensiblement parallèle à l'axe longitudinal du profil, de manière au moins sensiblement perpendiculaire à cet axe. Le système d'aimant présente un pôle magnétique nord dans la région d'une première extrémité du profil, un pôle magnétique sud dans la région d'une seconde extrémité du profil, et une diminution du profil dans la région centrale s'étendant entre le pôle nord et le pôle sud. On tire ainsi parti d'une dimension du système d'aimant pour obtenir de meilleurs résultats du point de vue de la plage de mesure de position.
PCT/IB2003/006269 2003-01-08 2003-12-15 Dispositif pour determiner une position WO2004063672A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2004566203A JP2006513415A (ja) 2003-01-08 2003-12-15 位置決定装置
US10/541,415 US7242181B2 (en) 2003-01-08 2003-12-15 Arrangement for determining position of a sensor in a magnetic field
AU2003288653A AU2003288653A1 (en) 2003-01-08 2003-12-15 Arrangement for determining position
EP03780496A EP1583938A1 (fr) 2003-01-08 2003-12-15 Dispositif pour determiner une position

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP03100018.5 2003-01-08
EP03100018 2003-01-08

Publications (1)

Publication Number Publication Date
WO2004063672A1 true WO2004063672A1 (fr) 2004-07-29

Family

ID=32695623

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2003/006269 WO2004063672A1 (fr) 2003-01-08 2003-12-15 Dispositif pour determiner une position

Country Status (6)

Country Link
US (1) US7242181B2 (fr)
EP (1) EP1583938A1 (fr)
JP (1) JP2006513415A (fr)
CN (1) CN100470202C (fr)
AU (1) AU2003288653A1 (fr)
WO (1) WO2004063672A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005088267A1 (fr) * 2004-03-10 2005-09-22 Robert Bosch Gmbh Element de liaison
WO2014001106A1 (fr) * 2012-06-29 2014-01-03 Continental Automotive Gmbh Générateur de champ magnétique et dispositif détecteur servant à déterminer un angle de rotation

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008019541A1 (de) * 2008-04-18 2009-10-22 Wabco Gmbh Positionsmesssystem
US10215550B2 (en) 2012-05-01 2019-02-26 Allegro Microsystems, Llc Methods and apparatus for magnetic sensors having highly uniform magnetic fields
CN108759651A (zh) * 2018-06-12 2018-11-06 中国大唐集团科学技术研究院有限公司华中分公司 磁力型间隙测量系统及间隙测量系统的磁体安装结构

Citations (2)

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Publication number Priority date Publication date Assignee Title
EP0907068A1 (fr) * 1997-10-03 1999-04-07 Britax Rainsfords Pty. Limited Système de capteur à effet Hall
WO2002012824A1 (fr) * 2000-08-04 2002-02-14 Matsushita Electric Industrial Co., Ltd. Detecteur de position pour organe de commande electromagnetique

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Publication number Priority date Publication date Assignee Title
JP4291936B2 (ja) * 2000-07-12 2009-07-08 カヤバ工業株式会社 回転角度センサ
US6798195B2 (en) * 2001-12-14 2004-09-28 Wabash Technologies, Inc. Magnetic position sensor having shaped pole pieces at least partially formed of a non-magnetic material for producing a magnetic field having varying magnetic flux density along an axis
US20040017187A1 (en) * 2002-07-24 2004-01-29 Van Ostrand Kent E. Magnetoresistive linear position sensor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0907068A1 (fr) * 1997-10-03 1999-04-07 Britax Rainsfords Pty. Limited Système de capteur à effet Hall
WO2002012824A1 (fr) * 2000-08-04 2002-02-14 Matsushita Electric Industrial Co., Ltd. Detecteur de position pour organe de commande electromagnetique
EP1300649A1 (fr) * 2000-08-04 2003-04-09 Matsushita Electric Industrial Co., Ltd. Detecteur de position pour organe de commande electromagnetique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005088267A1 (fr) * 2004-03-10 2005-09-22 Robert Bosch Gmbh Element de liaison
WO2014001106A1 (fr) * 2012-06-29 2014-01-03 Continental Automotive Gmbh Générateur de champ magnétique et dispositif détecteur servant à déterminer un angle de rotation
US9778070B2 (en) 2012-06-29 2017-10-03 Continental Automotive Gmbh Sensor device for use in determining an angle of rotation

Also Published As

Publication number Publication date
CN100470202C (zh) 2009-03-18
US20060097716A1 (en) 2006-05-11
EP1583938A1 (fr) 2005-10-12
JP2006513415A (ja) 2006-04-20
US7242181B2 (en) 2007-07-10
CN1735791A (zh) 2006-02-15
AU2003288653A1 (en) 2004-08-10

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